NSN 5310-00-977-2786 · NIIN 009772786 · Part number 634231
Curtiss-Wright Electro-Mechanical Corporation Div Epd · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 0UBG9
Government record, cited
NSN 5310-00-977-2786 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-977-2786. Manufacturer of record part number: 634231.
Also searched as5310-00-977-2786 ·
5310009772786 ·
NIIN 009772786 ·
00-977-2786 ·
FSC 5310 Nuts and Washers · CAGE 0UBG9 · 634231
Material Document and Classification: MIL-C-15345 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter: 2.469 INCHES NOMINAL IN
Material Thickness: 0.166 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN
Hole Diameter: 1.505 INCHES MINIMUM AND 1.506 INCHES MAXIMUM IN
External Keyway Length: 0.250 INCHES NOMINAL IN
2 manufacturer part numbers on file
Identification
NSN: 5310-00-977-2786
NIIN: 009772786
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 634231
Manufacturer: Curtiss-Wright Electro-Mechanical Corporation Div Epd
General Description
The Washer,keyway, cataloged under National Stock Number 5310-00-977-2786, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Epd. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5310-00-977-2786
Primary Part Number
634231
Item Name
Washer,keyway
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Curtiss-Wright Electro-Mechanical Corporation Div Epd
Status
ACTIVE
External Keyway Width
0.250 INCHES NOMINAL IN
Material Document and Classification
MIL-C-15345 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040
5310-00-000-0040 · Item name not on file
5310-00-000-0077
NUT,PLAIN,ROUND
5310-00-000-0079
WASHER,FLAT
5310-00-000-0079
WASHER,FLAT
5310-00-000-1146
5310-00-000-1146 · Item name not on file
5310-00-000-3815
5310-00-000-3815 · Item name not on file
5310-00-000-4532
5310-00-000-4532 · Item name not on file
5310-00-000-4540
5310-00-000-4540 · Item name not on file
Frequently Asked Questions
What is NSN 5310-00-977-2786?
NSN 5310-00-977-2786 is a Washer,keyway, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-00-977-2786?
NSN 5310-00-977-2786 has 2 manufacturer part numbers on file: 634231 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 634231 (Toolex, Inc Dba Toolex Inc).
What are the specifications of 634231?
Key specifications for 634231: External Keyway Width: 0.250 INCHES NOMINAL IN; Material Document and Classification: MIL-C-15345 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 2.469 INCHES NOMINAL IN; Material Thickness: 0.166 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN. 6 specifications are documented in the U.S. Government catalog.
Is NSN 5310-00-977-2786 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.